KR20100121806A - Recording medium, data recording/reproducing method, and data recording/reproducing apparatus - Google Patents

Abstract

PURPOSE: A recording medium, a data recording/reproducing method, and a data recording/reproducing apparatus are provided to reduce the size of defect management information of a recording medium and the time for reading the defect management information. CONSTITUTION: A recording medium comprises a data area in which user data is recorded, an inner area which is located inside the data area in the circumferential direction, and an outer area which is located outside the data area in the circumferential direction. The data area comprises one or more spare areas. The inner area or/and the outer area include one or more disk management areas. The disk management areas comprise defect management information, general management information, and address information of a spare area on a recording medium, where the spare area is used as a cluster replacing a defective cluster. The general management information comprises cluster address information of the disk management area in which the defect management information is recorded.

Description

RECORDING MEDIUM, DATA RECORDING / REPRODUCING METHOD, AND DATA RECORDING / REPRODUCING APPARATUS}

The present invention relates to a recording medium, a data recording / reproducing method, and a data recording / reproducing apparatus, and more particularly, to a method and apparatus for managing defects occurring in a recording medium during data recording / reproducing, and using the method and apparatus. A recording medium capable of recording / reproducing.

Recent rapid development of technology has led to the emergence of high-capacity recording media. Examples of such recording media include compact discs (CDs) and digital versatile discs (DVDs). In addition to these recording media, there are recording media that have dramatically increased capacity as next generation recording media. Such recording media include Blu-ray Disc, Near Field Recording Medium, and the like. In addition, in order to further increase the capacity of the recording medium, a multilayer recording medium having a plurality of recording layers has also emerged.

If a defect occurs in the recording medium when recording / reproducing data using such a high capacity, multi-layer recording medium, defect management is required. Therefore, there is a need for a more efficient method of managing defects occurring in the recording medium.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and an object thereof is to enable the most efficient management of defects when recording / reproducing a recording medium having a defect.

Accordingly, the present invention provides a data area in which user data is recorded; An inner region located on an inner circumferential side of the data region; And an outer area located on an outer circumferential side of the data area, wherein the data area includes one or more spare areas, at least one of the inner area and the outer area includes one or more disc management areas, and the disc management area includes: Defect management information of the recording medium; General management information in which information on the defect management information is recorded; And address information of the spare area that can be used as a cluster to replace a defective cluster, wherein the general management information includes cluster-specific address information of the disk management area in which the defect management information is recorded.

The present invention also includes an embodiment in which the defect management information includes a defect list entry in which cluster address information of the spare area that has been determined as a defect cluster is recorded.

The present invention also includes an embodiment in which address information of the spare area usable as a cluster replacing the defective cluster is recorded in a header of the defect management information.

The present invention also includes an embodiment in which address information of the spare area usable as a cluster replacing the defective cluster is recorded in the general management information.

In addition, the present invention includes a plurality of the spare area, the address information of the spare area usable as a cluster to replace the defective cluster includes an embodiment including the cluster address information for each spare area.

In addition, the present invention includes an embodiment in which address information of the spare area usable as a cluster to replace the defective cluster includes cluster address information of one spare area.

The present invention also includes an embodiment in which the address information is a physical sector number (PSN).

In addition, the present invention includes an embodiment in which the recording medium is rewritable.

The present invention also includes an embodiment in which the recording medium has three or more recording layers.

The present invention also provides a method for recording a recording medium, comprising: recording address information of a spare area of a recording medium usable as a cluster to replace a defective cluster of a recording medium in a disc management area of the recording medium; And recording general management information including address information for each cluster of the disc management area in which defect management information of the recording medium is recorded in the disc management area of the recording medium.

The present invention also provides a method comprising: reading address information of a spare area of a recording medium recorded in a disc management area included in at least one recording medium and usable as a cluster to replace a defective cluster of the recording medium; Reading general management information including address information of each cluster of the disc management area in which defect management information of the recording medium is recorded; And reproducing data of the recording medium according to the defect management information.

The present invention also provides a pickup for recording data on a recording medium; General management information including address information of a spare area of the recording medium usable as a cluster replacing a defective cluster of the recording medium, and cluster-specific address information of the disc management area in which defect management information of the recording medium is recorded. And a control unit for controlling the pickup to record the data into the disc management area of the recording medium.

The present invention also provides a pickup for reading data of a recording medium; And read address information of a spare area of the recording medium recorded in a disc management area included in at least one recording medium, and usable as a cluster to replace a defective cluster of the recording medium, and the defect management information of the recording medium. And a control unit which reads general management information including address information for each cluster of the disc management area in which data is recorded, and controls the pickup to reproduce data of the recording medium according to the defect management information. .

The present invention is not limited to the above-described embodiments, and can be modified by those skilled in the art as can be seen from the appended claims, and such modifications are within the scope of the present invention. To reveal.

According to the recording medium, the data recording / reproducing method and the data recording / reproducing apparatus according to the present invention, the size of defect management information of the recording medium can be reduced. In addition, since the general management information and the defect management information can be located together in the recording layer, the time for reading the defect management information can be shortened. Thus, defects occurring in the recording medium can be more efficiently managed.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. In the following description, the same components are given the same names and the same reference numerals for the convenience of description.

The terminology used in the present invention was selected as a general term that is widely used at present, but in some cases, the term is arbitrarily selected by the applicant, and in this case, the meaning of the term is described in detail in the description of the present invention. The present invention should be understood as meanings other than terms.

In the present invention, the recording medium means any medium on which data is recorded or can be recorded. For example, a recording medium is meant to encompass all media regardless of a recording method such as a disk or a magnetic tape. Hereinafter, the present invention will be described by using a disc (Disc), particularly a Blu-ray Disc (BD), as a recording medium for convenience of description, but the technical spirit of the present invention is equally applicable to other recording media. It will be self explanatory.

In addition, the present invention will be described based on the recording medium of the rewritable type (BD-RE) among the Blu-ray disc BD, but it is obvious that the technical idea of the present invention can be applied to other types of recording media.

In addition, the recording medium of the present invention is composed of certain units. For example, the recording medium may include a unit called a cluster, and the cluster may include a data frame which is a lower unit. For example, one cluster may be composed of 32 data frames. However, the name and number of each unit may vary depending on the type of recording medium.

1 is a schematic structural diagram of a recording medium 10 according to an embodiment of the present invention.

FIG. 1 illustrates a quadruple layer recording medium 10 composed of four layers L0, L1, L2, and L3. However, the present invention is not limited thereto, and the present invention is applicable to all recording media having a single layer and two or more layers. Since each layer may be configured in the same structure, it will be described in the present specification based on the first layer (L0).

The recording medium 10 of the present invention includes an inner zone 210, an outer zone 230, and a data zone 220.

The inner region 210 is located on the inner circumference side of the recording medium 10, and the outer region 230 is located on the outer circumference side of the recording medium 10 to store various kinds of information for controlling the recording medium 10. do. In addition, the inner region 210 and the outer region 230 include a disc management area (DMA).

The data area 220 stores data that a user wants to record. The portion surrounded by the inner region 210 and the outer region 230 on the recording medium 10 becomes a region where data is actually recorded. The data area 220 may include an inner spare area (ISA) 221, an outer spare area (OSA) 223, and a user data area 222. Although FIG. 1 illustrates two spare areas (inner spare area and outer spare area), arrangement and number are merely exemplary and various embodiments may be made without departing from the spirit of the present invention. In addition, the size of the spare areas 221 and 223 may be changed due to the characteristics of the rewritable recording medium. When the spare areas 221 and 223 are expanded, a part of the user data area 222 adjacent to the spare areas 221 and 223 is replaced with the spare areas 221 and 223. When the spare areas 221 and 223 are reduced, the user data area 222 is reduced. A portion of the spare areas 221 and 223 adjacent to the second area is replaced with the user data area 222.

The disc management area (DMA) is included in the inner area 210 and the outer area 230 of the recording medium 10. In addition, as shown in FIG. 1, the disk management area DAM may be configured with four DMA1, DMA2, DAM3, and DMA4, and may have a size of 32 clusters. However, the arrangement and the number of the disk management areas (DMAs) shown in FIG. 1 are only embodiments, and various embodiments are possible without departing from the spirit of the present invention.

The information recorded in each of the disk management areas DMA1, DMA2, DAM3, and DMA4 may be composed of the same information. However, other information may be recorded for information related to the position of each disk management area (DMA). In the multi-layer recording medium 10, the same information may be recorded in the disk management area (DMA) of each layer, or user data may be recorded.

In the disc management area DMA, general management information such as structure information of the recording medium 10 and defect management information such as a defect list may be recorded.

In the general management information, a disc definition structure (DDS) may be recorded. The format or format of the recording medium 10 is recorded in the disc definition structure DDS, and address information may be included in the size of the spare areas 221 and 223 of the recording medium 10 and the defect list DFL.

In addition, the disk definition structure DDS may further include address information on clusters of the spare areas 221 and 223 that can be used as a defect replacement cluster, thereby reducing the size of the defect management information. This will be described later.

For example, the disk definition structure (DDS) may be configured in a size of 4 clusters, and the disk definition structure (DDS) is configured to be repeatedly recorded four times in the disk management area (DMA) to prevent the information recorded in the disk definition structure (DDS) from being lost. Can be.

The defect management information may include a defect list (DFL), which is defect information of the recording medium 10. 2 is a structural schematic diagram of a defect list DFL according to an embodiment of the present invention.

A defect list header (DFL Header), a defect list entry (DFL Entry), and a defect list terminator (DFL Terminator) are recorded in the defect list DFL.

First, information about a defect list entry recorded adjacent to a defect list header is recorded in the defect list header. Such information may include an identifier, defect list (DFL) update information, the number of defect list entries, and the like. In one example, the defect list header may be configured in size of 64 bytes.

In addition, the defect list header may further include address information of clusters of the spare areas 221 and 223 that can be used as defect replacement clusters.

The defect list entry is recorded adjacent to the defect list header and contains information of defects occurring in the recording medium 10. The defect list entry includes identification information (Staus 1, Status 2), address information of an area where a defect occurs in the recording medium 10 (Defective Cluster first PSN), and address information of an area recorded by replacing a defective area (Replacement Cluster first). PSN) can be recorded. The address of the defective area or the replacement area may be configured with the cluster first PSN of the cluster.

Since one defect list entry represents one defect information, the number of defect list entries recorded in the defect list DFL increases relatively as the area where a defect occurs in the recording medium 10 increases. For example, if one defect list entry has an 8 byte size, the size of the defect list DFL increases as the area where the defect occurs increases. And if there are multiple defect list entries, the defect list entries can be written consecutively adjacent to the defect list header.

In addition, the defect list entry may be configured to include other information for managing a defect of the recording medium 10 in addition to the above defect information. Detailed description of the defect list entry will be described later.

In the defect list terminator, when the recording of all the defect list entries is finished, information for informing that the recording of the defect list has ended is recorded. In one example, the defect list terminator may be configured in size of 8 bytes.

As the number of layers increases in the multilayer recording medium 10, the user data area 222 where defects may occur also increases. Therefore, the size of the defect list DFL may be set according to the number of layers of the recording medium 10. For example, the single layer recording medium 10 may be composed of four clusters, and in the dual layer recording medium 10, eight clusters and a quadruple layer recording medium 10 may be used. In can be composed of 16 clusters.

In this case, an arbitrary value may be continuously recorded in an area after the defect list terminator is recorded in the preset defect list DFL, that is, the remaining empty area. In this specification, as an example, 00h values are continuously recorded in the remaining areas.

3 is a structural schematic diagram of a DFL entry according to an embodiment of the present invention.

The defect list entry of FIG. 3 records the identification information (Staus 1, Status 2), the address information of the cluster in which the defect has occurred (Defective Cluster first PSN, hereinafter referred to as 'defect cluster address information'), and replaces the region in which the defect has occurred. It consists of the cluster's address information (replacement cluster first PSN, hereinafter referred to as 'fault replacement cluster address information'). Therefore, when reading the recording medium 10 including the defect list entry, the data recorded in the defect replacement cluster is read instead of the data recorded in the defect cluster.

The defect list entry may be configured to include defect cluster address information and defect replacement cluster address information, as described above, and may also be configured to include other defect management information.

In the identification information, type information of a defect list entry is recorded. In one example, the defect list entry type may consist of several types, wherein the first type of defect list entry is configured to include defect cluster address information and defect replacement cluster address information.

The second type of defect list entry is configured to include defective cluster address information but not defective replacement cluster address information.

The third type of defect list entry is configured to contain address information of clusters that may be defective and possibly need to be checked. The third type of defect list entry may be named a defect list entry of a Possibly Bad Area (PBA) type.

The fourth type of defect list entry is configured to include address information of clusters that cannot be used as a defect replacement area. The fourth type of defect list entry may be named a defect list entry of type Unusable.

In addition, the fifth type of defect list entry may be located in the spare areas 221 and 223 and used as a defect replacement area, but is configured to include address information of a cluster that has been determined as a defect cluster in the past. The fifth type of defect list entry may be referred to as a defect list entry of a SPR-BA type, and the defect list entry of the SPR-BA type will be described in detail with reference to FIG. 4.

4 is a structural schematic diagram of a defect list entry of SPR-BA type according to an embodiment of the present invention.

For example, the defect list entry of the SPR-BA type may be configured such that the identification information 1 (Status 1) has a value of 0011h and the identification information 2 (Status 2) has a value of 0100h.

In the defective cluster address information, an arbitrary value having no meaning is recorded. In the present invention, for example, 00h values are configured to be recorded.

The defect replacement cluster address information may be located in the spare areas 221 and 223 of the recording medium 10 and used as a defect replacement area. However, address information of clusters that have been determined as defect clusters in the past is recorded.

Therefore, when using the clusters recorded in the defect list entry of the SPR-BA type as the defect replacement cluster, the data recorded in the defect replacement cluster should be verified whether or not it is normally recorded.

In this regard, in the rewritable recording medium 10, the spare areas 221, 223 of the recording medium 10, which can be used as defect replacement areas, can be configured variably. When the defect list DFL is configured by the above-described defect list entry of the SPR-BA type, the configuration of the defect list DFL may be changed due to the enlargement or reduction of the spare areas 221 and 223.

5 and 6 are schematic diagrams of a defect list DFL when the spare areas 221 and 223 are enlarged according to an exemplary embodiment of the present invention.

5 illustrates a recording medium 10 including a user data area 222 having N clusters of PBA (Possibly Bad Area) which may be defective, and the user data area (221, 223) due to the expansion of spare areas 221 and 223. A portion of the PBA (Nus clusters) included in 222 is shown in the recording medium 10 incorporated into the spare areas 221 and 223.

FIG. 6 illustrates a defect list DFL of the recording medium 10 before and after the spare areas 221 and 223 are enlarged. Case 1 relates to the recording medium 10 shown in FIG.

Specifically, in the recording medium 10 before the spare areas 221 and 223 are enlarged, the defect list DFL is composed of one PBA type defect list entry due to the PBA included in the user data area 222. . In the recording medium 10 after the spare areas 221 and 223 have been enlarged, the defect list DFL is still one PBA type defect list entry for the PBA included in the user data area 222, and the spare area (although it is a PBA). 221, 223, the defect list entries of the SPR-BA type for the area incorporated. This is because the PBA incorporated into the spare areas 221 and 223 is an area which can be used as a defect replacement cluster or a cluster which may be defective. Since a defect list entry of the SPR-BA type is configured for each cluster, Nus SPR-BA type defect list entries are recorded in the defect list DFL.

Case 2 shows a defect list (DFL) of the recording medium 10 when all PBAs of the user data area 222 are incorporated into the spare areas 221 and 223. All cluster information of the PBA is of the SPR-BA type. It is recorded in the defect list entry. In this case, N defect list entries of SPR-BA type are recorded in the defect list DFL.

7 and 8 are schematic diagrams of a defect list (DFL) when the spare areas 221 and 223 are reduced according to an embodiment of the present invention.

FIG. 7 illustrates a recording medium 10 in which spare areas 221 and 223 are reduced so that some areas of the spare areas 221 and 223 are incorporated into the user data area 222.

FIG. 8 shows a defect list DFL of the recording medium 10 before and after shrinking the spare areas 221 and 223. It is an area usable as a defect replacement cluster, and when a cluster having a defect is incorporated into the user data area 222, it becomes a PBA because the cluster becomes a defect. Therefore, the defect list (DFL) is recorded as a defect list entry of SPR-BA type, and the clusters recorded as a defect list entry of PBA type.

Further, even when an unusable area that is not a defective replacement cluster is incorporated into the user data area 222, the area becomes a PBA. Therefore, a defect list entry of the PBA type for the area is recorded in the defect list DFL.

As another method of managing defect information of the recording medium 10, address information of the spare areas 221 and 223 that can be used as a defect replacement cluster may be recorded in the disc management area (DMA). When a defect occurs in the user data area 222 to which data is to be recorded, data is recorded in the spare areas 221 and 223 according to the address information of the area available as a defective replacement cluster recorded in the disk management area (DMA). .

In this way, the defect list entry in the defect list DFL may be configured to include address information of all clusters of the spare areas 221 and 223 that can be used as defect replacement clusters. However, the larger the size of the spare areas 221 and 223, the more defect list entries are generated, so that the size of the defect list DFL increases.

9 to 11 are schematic diagrams in which address information of spare areas 221 and 223 usable as a defective replacement cluster is recorded in a disk management area (DMA) according to one embodiment of the present invention.

9 to 11, a defect list header or a disk definition in which address information (Next available PSN of ISA # / OSA # / Spare Area) of the spare areas 221 and 223 usable as the defect replacement cluster is not the above-described defect list entry. It shows what is recorded in the structure (DDS). The address information of the spare areas 221 and 223 may be configured as the first physical sector number of the area usable as the defect replacement cluster.

9 illustrates a structure of a defect list header in which address information of spare areas 221 and 223 that can be used as a defect replacement cluster is recorded, according to an embodiment of the present invention.

FIG. 10 illustrates a disk definition structure (DDS) in which address information of spare areas 221 and 223 that can be used as a defect replacement cluster is recorded according to an embodiment of the present invention.

The defect list header of FIG. 9 and the disc definition structure (DDS) of FIG. 10 show that the address information of the spare areas 221 and 223 that can be used as the defective replacement clusters is included for each of the spare areas 221 and 223. In the spare areas 221 and 223, address information of an area usable as a defective replacement cluster is recorded.

In the recording medium 10 having four layers, when the inner spare area 221 and the outer spare area 223 are provided for each layer, address information of the eight spare areas 221 and 223 is recorded.

In the case where a defect list header or a disk definition structure (DDS) is configured as shown in Fig. 9 or 10, since the address information of the spare areas 221 and 223 usable as the defect replacement cluster is not recorded in the defect list entry, the defect list (DFL) ) Does not affect the size.

In addition, the address information of the spare areas 221 and 223 that can be used as the defective replacement cluster may be configured with address information of one spare area 221 and 223. When a defect occurs in the recording medium 10, address information of the spare areas 221 and 223 to be used as the actual defect replacement cluster is recorded.

FIG. 11 shows a disk definition structure (DDS) having address information of one spare area (221, 223). Although not shown in the drawing, the address information of one spare area 221 and 223 is recorded in the defect list header may also be an embodiment of the invention.

In the case where the disk definition structure (DDS) is configured as shown in FIG. 11, only address information of a defective replacement cluster to be used immediately afterwards is stored, thereby enabling consistent management of the defective replacement cluster.

The defect list DFL is recorded in the disc management area DMA. Here, when a defect occurs in a part of the disk management area DMA in which the defect list DFL is recorded, a method of managing the defect list Damaged DFL is problematic.

First, all of the previously recorded defect lists DFL are set to a defect list in which a defect has occurred, and the defect list DFL is successively adjacent to an area in which the defect list in which the defect has occurred is recorded. Can be configured to rewrite.

However, since the rewritten defect list DFL may be recorded in the second layer L1 or a later layer, the defect list DFL may be located in a layer different from the general management information in the first layer L1. In this case, it takes a long time for the data recording / reproducing apparatus to read the general management information of the recording medium 10 and the defect list DFL together.

12 is a schematic diagram of a disk definition structure (DDS) in accordance with an embodiment of the present invention.

The disk definition structure DDS includes cluster-specific address information (First PSN of # Cluster of Defect Lists) of a disk management area (DMA) in which a defect list (DFL) is recorded. And, for example, the address information may be configured of the first physical sector number of the cluster.

In the case of the recording medium 10 having four layers, the defect list DFL may be composed of 16 clusters, and thus 16 cluster address information is recorded in the disc definition structure DDS. The 00h value may be recorded in the address information of the cluster that is not yet used.

Since the recording medium 10 having the disc definition structure DDS shown in FIG. 12 has address information of each cluster in which the defect list DFL is recorded, the defect list DFL is continuously recorded in the disc management area DMA. It doesn't have to be. That is, the defect list DFL may be recorded separately for each cluster. Hereinafter, embodiments according to the present invention will be described.

13 and 14 are schematic diagrams of a disc management area DMA in which a defect list DFL is recorded according to an embodiment of the present invention.

FIG. 13 shows that the defect list DFL is recorded separately in the disc management area DMA when a defect occurs in a part of the disc management area DMA in which the defect list DFL is recorded.

According to the disc management area DMA of FIG. 13, even when a defect occurs in a part of the area where the defect list DFL is recorded, the defect list DFL is recorded in the first layer L0. That is, the general management information and the defect list DFL are located in the first layer L0 together. Therefore, it is possible to shorten the time for the data recording / reproducing apparatus to read the general management information of the recording medium 10 and the defect list DFL together.

FIG. 14 shows a defect list DFL when a defect occurs in a part of the disc management area DMA in which the defect list DFL is recorded, so that the defect list DFL can be divided into a plurality of layers and recorded. Shows successive recordings in one layer.

Since the disk definition structure DDS contains address information of each cluster in which the defect list DFL is recorded, the defect list DFL can be recorded at any position in the disk management area DMA. Therefore, in a situation where a defect occurs in a part of the disk management area DMA and the defect list DFL is divided into multiple layers and recorded, a random value is padded in the disk management area DMA of the upper layer. The defect list DFL is continuously recorded in the disc management area DMA of the lower layer.

According to the disc management area DMA shown in Fig. 14, the defect list DFL is continuously recorded in one layer, so that the time for the data recording / reproducing apparatus to read the defect list DFL can be shortened.

15 is a block diagram of a data recording / reproducing apparatus according to an embodiment of the present invention.

Looking at the overall configuration of the data recording / reproducing apparatus of the present invention in detail, first, the pickup 70 is equipped with a laser diode therein to record data on the surface of the recording medium 10, or the recording medium 10 Read the signal reflected from).

 The servo 90 controls the tracking and focusing operation of the pickup 70 and the operation of the spindle motor 110.

 The R / F unit 80 generates a focus error signal and a tracking error signal, which are signals that detect out-of-focus and track-out of the laser beam by using the signal output from the pickup 70. .

The spindle motor 110 rotates a disc mounted in the data recording / reproducing apparatus.

The motor driver 100 drives the operation of the pickup 70 and the spindle motor 110 under the control of the servo 90.

The signal processor 40 restores the RF signal received from the R / F unit 80 to a desired reproduction signal value, or modulates and outputs a data signal to be recorded in a format recordable on the recording medium 10. .

The bit encoder 50 converts the write signal output from the signal processor 40 into a bit stream, and the pickup driver 60 transmits the bit stream generated by the bit encoder 50 to the recording medium 10. Convert to an optical signal to be stored.

The memory 150 temporarily stores information related to the recording medium 10 such as defect information of the recording medium 10 or performs a buffer function for temporarily storing data to be recorded or reproduced on the recording medium 10. do.

The controller 120 is configured to control the signal processor 40, the servo 90, and the memory 150 to control a drive including the components to perform data recording or reproducing operations.

The defect controller 130 generates a defect list DFL which is defect information of the recording medium 10, and controls the controller 120 to record the defect list DFL in the management area DMA of the recording medium 10. do. The defect controller 130 may configure the defect list DFL as a defect list header, a defect list entry, and a defect list terminator. The defect control unit 130 records information on a defect list entry recorded adjacent to the defect list header in the defect list header. Then, in the defect list entry, the recording medium 10 records the address information of the area where the defect has occurred, the type of the defect, and the information of the area recorded by replacing the defective area. The defect list terminator also records information for informing that the recording of the defect list entry has ended.

The defect control unit 130 records the disc definition structure DDS including the cluster-specific address information of the disc management area DMA in which the defect list DFL is recorded in the disc management area DMA of the recording medium 10. The pickup 70 is controlled.

The defect controller 130 records, in the defect list DFL, a defect list entry in which cluster address information of the spare areas 221 and 223 which have been determined as a defect cluster is recorded.

The defect control unit 130 records the address information of the spare areas 221 and 223 which can be used as a cluster to replace the defect cluster in the header of the defect list DFL or the disk definition structure DDS.

In the recording medium 10 including the plurality of spare areas 221 and 223, the defect controller 130 may include address information of the spare areas 221 and 223 that can be used as a cluster to replace the defective cluster. Or include cluster address information for one spare area (221, 223).

In addition, the defect control unit 130 is a spare area of a recording medium which is recorded in a disk management area (DMA) included in at least one of the recording mediums 10 and can be used as a cluster to replace a defective cluster of the recording medium 10. (221, 223), and reads a disk definition structure (DDS) including address information per cluster of the disk management area (DMA) in which the defect list (DFL) of the recording medium 10 is recorded, and the defect list is read. The pickup 70 is controlled to reproduce the data of the recording medium 10 in accordance with DFL.

In addition, the defect control unit 130 uses the defect list (DFL) of the recording medium 10 read out through the pickup 70 to retrieve data of the cluster where the defect occurred when reproducing the data of the recording medium 10. Replace with new data.

Although the defect controller 130 is illustrated as one component, the present invention is not limited thereto. The components of the defect controller 130 may be linked to each other to perform a function, and the defect controller 130 may be implemented in an integrated form with the controller 120 and / or the host 140. In addition, the defect controller 130 may include a signal processor 40, a bit encoder 50, a pickup driver 60, a pickup 70, a servo 90, a motor driver 100, a spindle motor 110, and a controller ( 120 may be additionally connected to a drive including the memory 150 to enable updating.

The host 140 is in charge of controlling all components of the data recording / reproducing apparatus, and interfaces with a user to control recording or reproducing of the recording medium 10. Specifically, the host 140 transmits a command to the control unit 120 to cause the data recording / reproducing apparatus of the present invention to perform a specific function, and the control unit 120 interoperates with each other in the data recording / reproducing apparatus according to the command. To control the components configured to.

In this regard, the control unit 120 and the host 140 may be provided and operated separately, and the functions of the control unit 120, the defect control unit 130, and the host 140 may be integrated into one control unit. It is also possible to work.

The host 140 may be a main controller of a computer, a server, an audio device, or a video device. That is, the recording / reproducing apparatus of the present invention may be an optical drive provided to a personal computer (PC) or the like, or may be a player not mounted on a personal computer or the like.

Accordingly, the data recording / reproducing apparatus according to the present invention can be applied to both an optical drive and a player utilized as a single product mounted and operated inside a PC.

In addition, the AV encoder 20 converts an input signal into a signal of a specific format recordable on the recording medium 10 and transmits the data to the signal processor 40 in order to record data on the recording medium 10. For example, the AV encoder 20 may encode the input signal into an MPEG format signal. The signal processor 40 adds an error correction code (ECC) to the signal encoded by the AV encoder 20, converts the signal into a format recordable on the recording medium 10, and transmits the converted signal to the bit encoder 50.

In addition, the AV decoder 30 finally decodes the reproduction signal of the recording medium 10 received from the signal processing unit 40 and provides it to the user as output data such as a video and an audio signal. The AV decoder 30 may be configured of a plurality of decoders according to the type of data.

The components of the data recording / reproducing apparatus according to the present invention described above may be implemented as software or hardware to perform respective functions, or may be implemented by interworking with the software and hardware.

Although the preferred embodiments of the present invention have been described above, the present invention is not limited thereto, and various modifications and changes can be made within the scope of the claims and the detailed description of the invention and the accompanying drawings, and the present invention is also provided. Naturally, it belongs to the range of.

1 is a schematic structural diagram of a recording medium according to an embodiment of the present invention.

2 is a structural schematic diagram of a defect list DFL according to an embodiment of the present invention.

3 is a structural schematic diagram of a DFL entry according to an embodiment of the present invention.

4 is a structural schematic diagram of a defect list entry of SPR-BA type according to an embodiment of the present invention.

5 and 6 are schematic diagrams of a defect list (DFL) when the spare area is enlarged according to an exemplary embodiment of the present invention.

7 and 8 are schematic diagrams of a defect list (DFL) when the spare area is reduced according to an embodiment of the present invention.

9 to 11 are schematic diagrams in which address information of a spare area usable as a defective replacement cluster is recorded in a disc management area (DMA) according to one embodiment of the present invention.

12 is a schematic diagram of a disk definition structure (DDS) in accordance with an embodiment of the present invention.

13 and 14 are schematic diagrams of a disc management area DMA in which a defect list DFL is recorded according to an embodiment of the present invention.

15 is a block diagram of a data recording / reproducing apparatus according to an embodiment of the present invention.

Claims (33)

A data area in which user data is recorded; An inner region located on an inner circumferential side of the data region; And An outer region located on an outer circumferential side of the data region Including; The data area includes one or more spare areas, and at least one of the inner area and the outer area includes one or more disc management areas; The disk management area is, Defect management information of the recording medium; General management information in which information on the defect management information is recorded; And Includes address information of the spare area available as a cluster to replace a defective cluster, The general management information includes a cluster-specific address information of the disk management area in which the defect management information is recorded. The method of claim 1, The defect management information, And a defect list entry in which cluster address information of the spare area determined as a defective cluster is recorded. The method of claim 1, And the address information of the spare area usable as a cluster replacing the defective cluster is recorded in a header of the defect management information. The method of claim 1, And the address information of the spare area usable as a cluster replacing the defective cluster is recorded in the general management information. The method of claim 1, A plurality of said spare areas, Address information of the spare area usable as a cluster to replace the defective cluster, And a recording medium including cluster address information for each spare area. The method of claim 1, Address information of the spare area usable as a cluster to replace the defective cluster, And a cluster address information of one spare area. The method of claim 1, And the address information is a physical sector number (PSN). The method of claim 1, The recording medium is a rewritable recording medium. The method of claim 1, The recording medium has three or more recording layers. Recording address information of a spare area of the recording medium usable as a cluster to replace a defective cluster of the recording medium in a disc management area of the recording medium; And Recording general management information including address information for each cluster of the disc management area in which defect management information of the recording medium is recorded in the disc management area of the recording medium; Data recording method comprising a. The method of claim 10, The defect management information, And a defect list entry in which cluster address information of the spare area that has been determined to be a defective cluster is recorded. The method of claim 10, And the address information of the spare area usable as a cluster replacing the defective cluster is recorded in a header of the defect management information. The method of claim 10, And the address information of the spare area usable as a cluster replacing the defective cluster is recorded in the general management information. The method of claim 10, In the recording medium including a plurality of the spare area, Address information of the spare area usable as a cluster to replace the defective cluster, And a cluster address information for each spare area. The method of claim 10, Address information of the spare area usable as a cluster to replace the defective cluster, A data recording method comprising cluster address information for one of the spare areas. Reading address information of a spare area of the recording medium recorded in a disc management area included in at least one recording medium and usable as a cluster to replace a defective cluster of the recording medium; Reading general management information including address information of each cluster of the disc management area in which defect management information of the recording medium is recorded; And And reproducing data of the recording medium according to the defect management information. The method of claim 16, The defect management information, And a defect list entry in which cluster address information of the spare area that has been determined to be a defective cluster is recorded. The method of claim 16, And the address information of the spare area usable as a cluster replacing the defective cluster is recorded in a header of the defect management information. The method of claim 16, And the address information of the spare area usable as a cluster replacing the defective cluster is recorded in the general management information. The method of claim 16, In the recording medium including a plurality of the spare area, Address information of the spare area usable as a cluster to replace the defective cluster, And a cluster address information for each spare area. The method of claim 16, Address information of the spare area usable as a cluster to replace the defective cluster, A data reproducing method comprising cluster address information for one spare area. A pickup for recording data on the recording medium; And Address information of a spare area of the recording medium usable as a cluster to replace a defective cluster of the recording medium; A control unit which controls the pickup so that general management information including address information for each cluster of the disc management area in which defect management information of the recording medium is recorded is recorded in the disc management area of the recording medium. Data recording device comprising a. The method of claim 22, The defect management information, And a defect list entry in which cluster address information of the spare area determined as a defective cluster is recorded. The method of claim 22, And the address information of the spare area usable as a cluster replacing the defective cluster is recorded in a header of the defect management information. The method of claim 22, And the address information of the spare area usable as a cluster replacing the defective cluster is recorded in the general management information. The method of claim 22, In the recording medium including a plurality of the spare area, Address information of the spare area usable as a cluster to replace the defective cluster, And a cluster address information for each spare area. The method of claim 22, Address information of the spare area usable as a cluster to replace the defective cluster, And a cluster address information for one said spare area. A pickup for reading data of the recording medium; And Read address information of a spare area of the recording medium recorded in a disc management area included in at least one recording medium and usable as a cluster to replace a defective cluster of the recording medium; Read general management information including address information of each cluster of the disc management area in which defect management information of the recording medium is recorded; A control unit for controlling the pickup to reproduce data of the recording medium according to the defect management information Data reproducing apparatus comprising a. 29. The method of claim 28, The defect management information, And a defect list entry in which cluster address information of the spare area that has been determined as a defective cluster is recorded. 29. The method of claim 28, And the address information of the spare area usable as a cluster replacing the defective cluster is recorded in a header of the defect management information. 29. The method of claim 28, And the address information of the spare area usable as a cluster replacing the defective cluster is recorded in the general management information. 29. The method of claim 28, In the recording medium including a plurality of the spare area, Address information of the spare area usable as a cluster to replace the defective cluster, And a cluster address information for each spare area. 29. The method of claim 28, Address information of the spare area usable as a cluster to replace the defective cluster, And a cluster address information for one spare area.

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